The smell of freshly cut grass is actually a plant distress call.
31
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Research indicates that plants grow healthier when they are stroked.
173
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
One barrel of petroleum holds 42 gallons.
20
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39